From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:37248 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752420AbdEPKhs (ORCPT ); Tue, 16 May 2017 06:37:48 -0400 Subject: Patch "staging: gdm724x: gdm_mux: fix use-after-free on module unload" has been added to the 4.4-stable tree To: johan@kernel.org, gregkh@linuxfoundation.org, wkang77@gmail.com Cc: , From: Date: Tue, 16 May 2017 12:37:36 +0200 Message-ID: <149493105618143@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled staging: gdm724x: gdm_mux: fix use-after-free on module unload to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: staging-gdm724x-gdm_mux-fix-use-after-free-on-module-unload.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From b58f45c8fc301fe83ee28cad3e64686c19e78f1c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 26 Apr 2017 12:23:04 +0200 Subject: staging: gdm724x: gdm_mux: fix use-after-free on module unload From: Johan Hovold commit b58f45c8fc301fe83ee28cad3e64686c19e78f1c upstream. Make sure to deregister the USB driver before releasing the tty driver to avoid use-after-free in the USB disconnect callback where the tty devices are deregistered. Fixes: 61e121047645 ("staging: gdm7240: adding LTE USB driver") Cc: Won Kang Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/staging/gdm724x/gdm_mux.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/staging/gdm724x/gdm_mux.c +++ b/drivers/staging/gdm724x/gdm_mux.c @@ -670,14 +670,14 @@ static int __init gdm_usb_mux_init(void) static void __exit gdm_usb_mux_exit(void) { - unregister_lte_tty_driver(); - if (mux_rx_wq) { flush_workqueue(mux_rx_wq); destroy_workqueue(mux_rx_wq); } usb_deregister(&gdm_mux_driver); + unregister_lte_tty_driver(); + } module_init(gdm_usb_mux_init); Patches currently in stable-queue which might be from johan@kernel.org are queue-4.4/usb-serial-ftdi_sio-add-device-id-for-microsemi-arrow-sf2plus-dev-kit.patch queue-4.4/staging-gdm724x-gdm_mux-fix-use-after-free-on-module-unload.patch